The Siemens 3VA2010-5KP36-0LK0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 160 A maximum and 20 A minimum continuous current, fitted with an ETU850 electronic trip unit. The interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — so it clears high-fault currents across common low-voltage distribution voltages without cascading upstream. An undervoltage release and communication function are built in, and the front carries IP40 protection. This is a current-production part (active lifecycle).
What the ratings mean for panel fit
The 160 A frame covers feeder and large branch circuits; the 20 A minimum setting lets the ETU850 be dialed down to protect smaller loads without swapping the breaker. At 65 °C ambient the unit still carries its full 100 A rating (flat derating curve from 40 °C through 70 °C), so it suits warm enclosures or panels near heat sources. The 3-pole footprint — 105 mm wide, 181 mm tall, 86 mm deep — fits standard Siemens SENTRON mounting patterns; the 16 W maximum power loss at full load means minimal heat contribution inside a sealed panel.